X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=module%2Fzfs%2Fzfs_znode.c;h=8074f1d008c4c7d1d5505845955b2ccbb2210831;hb=84daaddedbfc9cf4bd1490d8a6f4b2967051e308;hp=a35e3b5f2c7849d379d8c46e5de559c1aed10e88;hpb=28eb9213d89cb25438fcecb86e735cc3edc26ea4;p=zfs.git

diff --git a/module/zfs/zfs_znode.c b/module/zfs/zfs_znode.c
index a35e3b5..8074f1d 100644
--- a/module/zfs/zfs_znode.c
+++ b/module/zfs/zfs_znode.c
@@ -52,6 +52,7 @@
 #include <sys/zfs_rlock.h>
 #include <sys/zfs_fuid.h>
 #include <sys/zfs_vnops.h>
+#include <sys/zfs_ctldir.h>
 #include <sys/dnode.h>
 #include <sys/fs/zfs.h>
 #include <sys/kidmap.h>
@@ -115,6 +116,7 @@ zfs_znode_cache_constructor(void *buf, void *arg, int kmflags)
 	zp->z_dirlocks = NULL;
 	zp->z_acl_cached = NULL;
 	zp->z_xattr_cached = NULL;
+	zp->z_xattr_parent = NULL;
 	zp->z_moved = 0;
 	return (0);
 }
@@ -137,6 +139,7 @@ zfs_znode_cache_destructor(void *buf, void *arg)
 	ASSERT(zp->z_dirlocks == NULL);
 	ASSERT(zp->z_acl_cached == NULL);
 	ASSERT(zp->z_xattr_cached == NULL);
+	ASSERT(zp->z_xattr_parent == NULL);
 }
 
 void
@@ -267,8 +270,12 @@ zfs_inode_destroy(struct inode *ip)
 	znode_t *zp = ITOZ(ip);
 	zfs_sb_t *zsb = ZTOZSB(zp);
 
+	if (zfsctl_is_node(ip))
+		zfsctl_inode_destroy(ip);
+
 	mutex_enter(&zsb->z_znodes_lock);
 	list_remove(&zsb->z_all_znodes, zp);
+	zsb->z_nr_znodes--;
 	mutex_exit(&zsb->z_znodes_lock);
 
 	if (zp->z_acl_cached) {
@@ -281,6 +288,11 @@ zfs_inode_destroy(struct inode *ip)
 		zp->z_xattr_cached = NULL;
 	}
 
+	if (zp->z_xattr_parent) {
+		iput(ZTOI(zp->z_xattr_parent));
+		zp->z_xattr_parent = NULL;
+	}
+
 	kmem_cache_free(znode_cache, zp);
 }
 
@@ -352,6 +364,9 @@ zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz,
 
 	zp = ITOZ(ip);
 	ASSERT(zp->z_dirlocks == NULL);
+	ASSERT3P(zp->z_acl_cached, ==, NULL);
+	ASSERT3P(zp->z_xattr_cached, ==, NULL);
+	ASSERT3P(zp->z_xattr_parent, ==, NULL);
 	zp->z_moved = 0;
 	zp->z_sa_hdl = NULL;
 	zp->z_unlinked = 0;
@@ -361,7 +376,9 @@ zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz,
 	zp->z_blksz = blksz;
 	zp->z_seq = 0x7A4653;
 	zp->z_sync_cnt = 0;
-	zp->z_is_zvol = 0;
+	zp->z_is_zvol = B_FALSE;
+	zp->z_is_mapped = B_FALSE;
+	zp->z_is_ctldir = B_FALSE;
 
 	zfs_znode_sa_init(zsb, zp, db, obj_type, hdl);
 
@@ -385,6 +402,14 @@ zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz,
 		goto error;
 	}
 
+	/*
+	 * xattr znodes hold a reference on their unique parent
+	 */
+	if (dip && zp->z_pflags & ZFS_XATTR) {
+		igrab(dip);
+		zp->z_xattr_parent = ITOZ(dip);
+	}
+
 	ip->i_ino = obj;
 	zfs_inode_update(zp);
 	zfs_inode_set_ops(zsb, ip);
@@ -392,15 +417,12 @@ zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz,
 	if (insert_inode_locked(ip))
 		goto error;
 
-	if (dentry) {
-		if (zpl_xattr_security_init(ip, dip, &dentry->d_name))
-			goto error;
-
+	if (dentry)
 		d_instantiate(dentry, ip);
-	}
 
 	mutex_enter(&zsb->z_znodes_lock);
 	list_insert_tail(&zsb->z_all_znodes, zp);
+	zsb->z_nr_znodes++;
 	membar_producer();
 	mutex_exit(&zsb->z_znodes_lock);
 
@@ -432,6 +454,10 @@ zfs_inode_update(znode_t *zp)
 	zsb = ZTOZSB(zp);
 	ip = ZTOI(zp);
 
+	/* Skip .zfs control nodes which do not exist on disk. */
+	if (zfsctl_is_node(ip))
+		return;
+
 	sa_lookup(zp->z_sa_hdl, SA_ZPL_ATIME(zsb), &atime, 16);
 	sa_lookup(zp->z_sa_hdl, SA_ZPL_MTIME(zsb), &mtime, 16);
 	sa_lookup(zp->z_sa_hdl, SA_ZPL_CTIME(zsb), &ctime, 16);
@@ -613,7 +639,7 @@ zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr,
 	 * order for  DMU_OT_ZNODE is critical since it needs to be constructed
 	 * in the old znode_phys_t format.  Don't change this ordering
 	 */
-	sa_attrs = kmem_alloc(sizeof(sa_bulk_attr_t) * ZPL_END, KM_SLEEP);
+	sa_attrs = kmem_alloc(sizeof(sa_bulk_attr_t) * ZPL_END, KM_PUSHPAGE);
 
 	if (obj_type == DMU_OT_ZNODE) {
 		SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_ATIME(zsb),
@@ -1488,13 +1514,13 @@ zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx)
 	vattr.va_uid = crgetuid(cr);
 	vattr.va_gid = crgetgid(cr);
 
-	rootzp = kmem_cache_alloc(znode_cache, KM_SLEEP);
+	rootzp = kmem_cache_alloc(znode_cache, KM_PUSHPAGE);
 	rootzp->z_moved = 0;
 	rootzp->z_unlinked = 0;
 	rootzp->z_atime_dirty = 0;
 	rootzp->z_is_sa = USE_SA(version, os);
 
-	zsb = kmem_zalloc(sizeof (zfs_sb_t), KM_SLEEP);
+	zsb = kmem_zalloc(sizeof (zfs_sb_t), KM_PUSHPAGE | KM_NODEBUG);
 	zsb->z_os = os;
 	zsb->z_parent = zsb;
 	zsb->z_version = version;
@@ -1502,7 +1528,7 @@ zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx)
 	zsb->z_use_sa = USE_SA(version, os);
 	zsb->z_norm = norm;
 
-	sb = kmem_zalloc(sizeof (struct super_block), KM_SLEEP);
+	sb = kmem_zalloc(sizeof (struct super_block), KM_PUSHPAGE);
 	sb->s_fs_info = zsb;
 
 	ZTOI(rootzp)->i_sb = sb;